Sized for use as a Go-Bag, on day trips, office commutes, or as a smaller carry-on, the RUSH 12 pack is loaded with 16 total compartments, pockets, and slots to stow and organize your gear. The RUSH 12 is equipped with a web platform and is made from water resistant 1050D nylon. Main compartment: 18" x 11" x 6". Capacity: 1296 cu in/21.2 liters. Large zippered Administrative compartment with 9 pockets and slots. Zippered fleece-lined eyewear pocket. Compatible with hydration systems up to 60 oz. Web platform on front, sides, and shoulder straps. Two external compression straps. Contoured yoke shoulder strap system with elastic keepers for strap ends. Adjustable height sternum strap.